Arrange cycles of work into sprints: Use sprints to drive incremental shipping, allow your team to ship higher-high-quality get the job done and provide value speedier.This commit does not belong to any branch on this repository, and may belong to a fork beyond the repository.Vi?c b?o qu?n s?n ph?m vô cùng ??n gi?n và d? dàng nh?ng ?a s? ng??i